"Black and silver is overdone and as a result any MOC that uses it automatically sux regardless of how well it is built."
Anyway, I wanted to bring up...
Those shoulders make things super wide and just look awkward.
I think that's how I'd describe the whole MOC. "Awkward."
Like, the hands and their blue-pin connection free-rotating claws just seems weird to me.
Also, while I appreciate his more hunched over look, and I think it's very interesting, I feel it only clashes with the humanoid knightly Karzon helm.
The lower arms being so long while the upper longs are not only short but also sticking up like towers just seems off putting.
However, it does have its pros. As @Ekorak said, the wings do work somewhat well, if it weren't for the fact that he doesn't seem like a character that could even properly use them.
Also, I'm curious, and would like to get an idea of what pieces you exactly used for the neck connection.